"In this small bivalve the transparent mantle completely overgrows the valves that are permanently widely gaping, so the shells are internal. The animal’s inhalant siphon can be seen on the left."
Comment from Richard Willan
In this small bivalve the transparent mantle completely overgrows the valves that are permanently widely gaping, so the shells are internal. The animal’s inhalant siphon can be seen on the left.